Besides the above given tips, other effective home remedies for this condition are - application of oatmeal, aloe vera, potato juice, baking soda, and tree tea oil on the skin. All these home remedies can treat a regular case of cystic acne. However, if the acne is severe and refuses to be controlled even with the preventive measures and cures mentioned here, it is advised to consult a dermatologist as soon as possible.